darner vs odonate

darner

noun
  • Any dragonfly of the family Aeshnidae; a hawker. 

  • One who darns. 

  • A needle used for darning, a darning needle. 

odonate

noun
  • Any carnivorous insect of the order Odonata; a dragonfly or damselfly. 

How often have the words darner and odonate occurred in a corpus of books? (source: Google Ngram Viewer )